集合A={x|x2-a2≤0,其中a>0},B={x|x2-3x-4>0},且A

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问题:

集合A={x|x2-a2≤0,其中a>0},B={x|x2-3x-4>0},且A∪B=R,则实数a的取值范围是(  )

A.a≥4

B.0<a≤4

C.a<4

D.4<a≤6

考点:集合间交、并、补的运算(用Venn图表示)
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客户的交易结算资金必须全额存入指定的商业银行,单独立户管理。

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气柜安装完毕后,其壁板所有对焊焊缝应采用的检验方法为()。

A.射线探伤

B.氨渗漏测验

C.煤油渗透试验

D.真空试漏法

题型:选择题

典型的卫生填埋场封顶系统包括哪些部分?

题型:选择题

Tom Wayne, CFA, is the investment manager of the Franklin City Employee Pension Plan. Wayne is a volunteer of CFA Institute and helps write CFA examination questions. Introduction materials of Franklin state: "Tom Wayne holds the CFA designation and has been appointed to assist in writing CFA examination questions. The honor puts him in the top tier of CFA charter holders. " Has Wayne violated the Professional Conduct Standards()

A. No.

B. Yes, relating to preservation of confidentiality.

C. Yes, relating to conduct as members and candidates in the CFA program.

题型:选择题

不与湿邪致病相关的是()

A.善动不居,行无定处

B.其性趋下,沉重秽浊

C.性凝结,阻滞不通

D.形体消瘦,腰膝酸软

E.缠绵难愈,发病缓慢

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